EP0814921B1 - Dispositif d'etirage automatique - Google Patents

Dispositif d'etirage automatique Download PDF

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Publication number
EP0814921B1
EP0814921B1 EP96908170A EP96908170A EP0814921B1 EP 0814921 B1 EP0814921 B1 EP 0814921B1 EP 96908170 A EP96908170 A EP 96908170A EP 96908170 A EP96908170 A EP 96908170A EP 0814921 B1 EP0814921 B1 EP 0814921B1
Authority
EP
European Patent Office
Prior art keywords
exit
long
product
pulling device
traction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP96908170A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0814921A1 (fr
Inventor
Jean-Louis Sauvonnet
Jean Lemire
Lionel Robbe
Jean Chouvel
Pier Bruno Ceccacci
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Trefimetaux SAS
Original Assignee
Trefimetaux SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9477573&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0814921(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Trefimetaux SAS filed Critical Trefimetaux SAS
Publication of EP0814921A1 publication Critical patent/EP0814921A1/fr
Application granted granted Critical
Publication of EP0814921B1 publication Critical patent/EP0814921B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B21C1/27—Carriages; Drives
    • B21C1/30—Drives, e.g. carriage-traversing mechanisms; Driving elements, e.g. drawing chains; Controlling the drive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles

Definitions

  • the invention relates to a drawing device according to the preamble of claim 1 and so the field of shaping materials by drawing or drawing to reduce, in one or several drawing passes, the dimensions of objects of very long metal, typically tubes.
  • US-A-1,911,157 describes a device stretching according to the preamble of claim 1 comprising, from upstream to downstream, a pushing of the wire or the bar in a die, a die and a traction device made up of chains continuous carrying three gripping heads, regularly distributed so that a gripping head is always active to pull said wire or said bar.
  • FIGS. 3 to 7 and 3a to 7a illustrate in detail the automatic stretching device according to an embodiment of the invention, a device which comprises, on the one hand in line, stretching means: stretching block (7), cooling block (13) and traction device (16), and on the other hand, an automatic engagement device (19) integrated into these stretching means.
  • stretching means stretching block (7), cooling block (13) and traction device (16)
  • an automatic engagement device (19) integrated into these stretching means a device which comprises, on the one hand in line, stretching means: stretching block (7), cooling block (13) and traction device (16), and on the other hand, an automatic engagement device (19) integrated into these stretching means.
  • the invention makes it possible not only to carry out an automatic engagement of the tube to be stretched in a die, but above all to achieve engagement of the tube as far as the outlet (33) of the traction device (16).
  • the invention aims not only to solve the problems already exposed, but also to manufacture long drawn products, mainly but not exclusively tubes, having excellent surface condition - which excludes many traction devices which injure and mark on the surface the product which is long to stretch.
  • the plaintiff came to the conclusion that all of the problems posed, both economic and of quality, could only be resolved if a traction device based on the use of close driving belts which enclose said long product stretched over a length sufficient to exert the traction force and drive it by simple pressure of the driving belts without injuring it, which therefore required an automatic engagement device allowing precisely the engagement of the long product to stretch to the outlet (33) of the traction device (16).
  • the automatic engagement device (19) can also comprise various specific means of implementation.
  • said auxiliary traction means (20) is chosen so as to present, when moving forward, a sufficient tensile strength to be able to pull said long product (2a) from the outlet of said drawing block (7), through of said cooling block (12), up to the exit of said traction device (16), and to present, in rearward displacement, a sufficient compressive strength so that, thanks to said guide means (24), said means 'automatic hooking / unhooking (21) can be moved to the exit of said drawing block (7).
  • said auxiliary traction means (20) is a steel strip whose lateral positioning is ensured by rails which constitute said guide means (24).
  • this steel strip can be replaced by any other device for transmitting movement and force, for example a cable inserted in small cylindrical sleeves, or even for example a strip in the form of portions of articulated bars, or 'a chain formed of articulated links.
  • auxiliary traction means (20) When the auxiliary traction means (20) is not activated, it must be positioned, at the output of said device traction (16), thanks to a guide means (24a) and garage said auxiliary traction means (20) and said means attachment (21).
  • said secondary means (23) can be a jack (23) as shown in FIGS. 3 to 7, or a drive motor axis or any other equivalent means.
  • said hooking / unhooking means automatic (21) consists of two cams (22) with teeth oriented allowing a gripping of said end of said long product (2) tapered as soon as and as long as the medium automatic hooking / unhooking (21) exerts traction on said forward moving end. See figure 8.
  • said cams (22) have a logarithmic spiral profile of so as to exert pressure on the tip proportional to traction and this for tube manufacturing whose diameters can vary within a fairly wide range.
  • the stretching device may comprise a cooling block (12) with which is associated a wiping box (14).
  • This wiping box (14), the central orifice of which is adapted to the stretched product (2a), is translatable by said guide means (24) and by the thrust of said hooking means (21) up to the exit of said drawing block (7).
  • a cooling block (12) is not per se necessary for implementing the invention, but, taking into account the need to exert traction on the long drawn metal product without injuring it, it is preferable to use , for the drive belts of the traction device (16), slightly abrasive materials, in particular plastic materials or elastomers which may have limited thermal stability.
  • said traction device (16) is a belt or track device (17), which can exert a traction force over a sufficient length LT (18), typically from 1 to 3 m depending on the traction forces required and the frictional forces between the long drawn product and said belts, without injuring the long drawn product.
  • the driving belts are for example constituted by bands of elastomeric material or rubber held against each other by pressure rollers and / or motors.
  • the driving belts (17) could also be replaced by a succession of pairs of rollers which would have an equivalent function, the main thing being that the traction length LT (18) between the driving belts and said long drawn product is sufficient to exert the 'tensile force required for stretching, without injuring the surface of the long drawn product.
  • the device according to the invention may comprise, in the case of drawing tubes, at the outlet of the drawing block (7), means (37) for forming a notch (30 ) to reduce the inside diameter of said tube and, during start-up, facilitate the positioning of the mandrel adapted to each die.
  • the means (37) shown in FIG. 3 corresponds to two cams, the rotation of which leads to the formation of a notch (30), of the type of those shown in FIG. 10.
  • the stretching of tubes implies the presence of a mandrel (11) inside the tube which must, during the drawing of the tube, be caught in the drawing die.
  • the notch (30) is for purpose of allowing the engagement, in the sector (10), of the part of smaller diameter of the mandrel (11). Without notch (30), there is a risk of seeing the mandrel slide.
  • This notch is only made at the tip (4) of the tube to be stretched only insofar as it is a intermediate stretching pass, since the notch made during of the engagement of the tip of the tube is intended to allow engaging the mandrel in the following stretching pass, as will be explained later.
  • the automation means used are known in themselves and can possibly be supplemented by any type sensor, typically long product presence sensor, speed sensor, temperature sensor, allowing reliable use of the stretching device according to the invention.
  • a stretching line (31) comprising in series as many stretching devices according to the invention such as that already described as there are desired stretching passes.
  • This line comprises, between two successive stretching devices, a regulating device (27) allowing the guidance of said long stretched product (2a) towards the inlet of the following stretching block (7a), towards a slicing station or towards any other treatment center for the stretched tube.
  • said regulating device (27) allows the formation of a loop (28) of said long drawn product, and comprises displacement means (29), typically driving rollers between which the product passes long stretched at the end of the loop, and a loop position sensor (27a).
  • FIG. 9 shows the long drawn product entering and leaving said loop as being collinear, the loop control device (27) in fact makes it possible to orient, at the exit of the loop, the long drawn product in the desired direction, as clearly shown in Figure 11.
  • drawing devices typically from 3 to 5, ordered by decreasing die diameter and to constitute a drawing line (31) according to the invention, as shown in the figure 11.
  • a synchronization system for these devices is necessary, in particular because the linear speed of long drawn products increases at the outlet of each die.
  • This synchronization system makes it possible to carry out a sequence of stretching passes with different elongations (for example 160% stretching in the first pass, 130% in the second pass, etc.), unlike the stretching systems of the 'prior art which are designed only for a given stretching range.
  • the drawing line (31) therefore generally comprises means for controlling the position and the speed of said long product (2, 2a, 2b 7), means for controlling the diameter of each regulation loop (28), means for synchronizing the different linear speeds of said long drawn products at the output of each stretching block by varying the speed imposed on the traction devices (16) and / or the means of displacement (29), so that there is neither accumulation or excessive tension of said long products drawn between two successive drawing blocks (7,7a).
  • the invention can be used for drawing products in crowns, such as tubes, wires or bars.
  • the invention can also be used for drawing straight metal products, such as bars and tubes.
  • a complete drawing line (31) was produced as shown in FIG. 11.
  • This line (31) comprises 3 stretching devices (1,1a, 1b) followed by a slicing station (32) which delivers crowns of conditioned tubes (35) ready to be marketed. It made it possible to pass, in 3 stretching passes, to go from a tube diameter of 18 mm to a diameter of 9.52 mm.
  • This line is supplied by baskets (6) of tubes stretch.
  • Each drawing device (1,1a, 1b) includes in series a drawing block (7,7a, 7b), a cooling block (12,12a, 12b) and a traction device (16,16a, 16b) to track fitted with typically rubber belts (17).
  • a loop regulating device (27,27a) makes it possible in particular to orient the drawn tube in the desired direction, and to ensure the necessary flexibility between two devices 'successive stretching, so that there is locally neither accumulation nor lack of stretched tube.
  • the line (31) comprises means for guiding the stretched tube which is all along the line and permanently under position control - except at the level of the loop (28) of the regulating device (27), intended to absorb the jerks.
  • the automatic piloting and line synchronization system known per se, has not been shown in FIG. 11.
  • tip preparation can be performed in masked time, so that, overall, in this example, average productivity to simultaneously achieve the 3 final stretching passes and slicing is between 150 and 250 m / min (effective speed), for maximum speed around 400 m / min on this example, but it can be greater than 1800 m / min.
  • the stretching devices according to the invention are already of great interest in themselves for manufacturing, economically, long drawn products having a high surface quality.
  • the invention gives its full measure in the production of drawing lines (31) according to the invention. Indeed, if we compare a line (31) like that of the example of embodiment, with the devices of the state of the art, the productivity is multiplied approximately by 2 for the only aspect "stretching" since the line (31) performs 3 drawing passes at an effective speed of 200 m / min, while the device of the prior art performs 1 pass at an effective speed of 250 m / min.
  • the trancannage is an operation carried out separately, and not integrated as on the line (31) according to the invention, which presents at the same time a strong reduction in handling and labor costs, and also eliminating the risk of damage to the tubes.
  • the possibility of integrating the slicing (or any other treatment or finishing operation of the drawn tube) in the drawing of the tube results from the fact that the invention allows total guidance of the long drawn product, the trajectory of the long drawn product, perfectly defined, which can be compared to a broken straight line, each change of direction being ensured by a regulating device (27) with a long stretched product loop (28).
  • the drawing means of the prior art which transforms a tube crown into another drawn tube crown, did not allow the integration of the slicing operation - of any other operation - with the drawing of the tube.
  • the cost of a line (31) according to the example is about 4 times less than that of corresponding state of the art equipment including the means of stretching and slicing, and if we compare the footprint of a line (31) according to the example and that, shown diagrammatically in FIG. 2, of the equipment according to the state of the technique, this space requirement is approximately 2 times less with a line (31) according to the invention.
  • the invention is not limited to the example of realization and allows to realize, by the modular design of a drawing line, different possibilities.
  • the set of tube drawing passes can be carried out with 2 lines of 4 stretching devices each, the second and last line including the trancannage station.
  • the invention makes it possible to guarantee, thanks to the integration from the slicing station to the drawing line (integration which was not possible with the stretching devices according to state of the art), production of long products drawn with high surface quality.

Landscapes

  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Metal Extraction Processes (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Coating Apparatus (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Slide Fasteners (AREA)
  • Motorcycle And Bicycle Frame (AREA)
  • Forwarding And Storing Of Filamentary Material (AREA)
  • Press Drives And Press Lines (AREA)
  • Soil Working Implements (AREA)
  • Lubricants (AREA)
  • Manufacturing And Processing Devices For Dough (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP96908170A 1995-03-24 1996-03-21 Dispositif d'etirage automatique Expired - Lifetime EP0814921B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9503742A FR2731925B1 (fr) 1995-03-24 1995-03-24 Dispositif d'etirage automatique
FR9503742 1995-03-24
PCT/FR1996/000430 WO1996030136A1 (fr) 1995-03-24 1996-03-21 Dispositif d'etirage automatique

Publications (2)

Publication Number Publication Date
EP0814921A1 EP0814921A1 (fr) 1998-01-07
EP0814921B1 true EP0814921B1 (fr) 1999-01-13

Family

ID=9477573

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96908170A Expired - Lifetime EP0814921B1 (fr) 1995-03-24 1996-03-21 Dispositif d'etirage automatique

Country Status (32)

Country Link
US (1) US5660071A (xx)
EP (1) EP0814921B1 (xx)
JP (1) JP3066807B2 (xx)
KR (1) KR100287029B1 (xx)
CN (1) CN1082405C (xx)
AR (1) AR001272A1 (xx)
AU (1) AU701404B2 (xx)
BR (1) BR9607744A (xx)
CA (1) CA2214020C (xx)
CO (1) CO4520113A1 (xx)
DE (1) DE69601357T2 (xx)
DZ (1) DZ2004A1 (xx)
EG (1) EG20904A (xx)
ES (1) ES2126394T3 (xx)
FR (1) FR2731925B1 (xx)
HK (1) HK1002175A1 (xx)
HU (1) HU224599B1 (xx)
IL (1) IL117509A (xx)
IN (1) IN188011B (xx)
MY (1) MY116647A (xx)
PE (1) PE22697A1 (xx)
PL (1) PL179893B1 (xx)
RU (1) RU2133649C1 (xx)
SI (1) SI0814921T1 (xx)
SK (1) SK284696B6 (xx)
TN (1) TNSN96041A1 (xx)
TR (1) TR199701022T1 (xx)
TW (1) TW315332B (xx)
UA (1) UA45395C2 (xx)
WO (1) WO1996030136A1 (xx)
YU (1) YU49216B (xx)
ZA (1) ZA962329B (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7096706B2 (en) 2003-09-10 2006-08-29 Sms Meer Gmbh Drawing apparatus and method of operating same

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19636322C1 (de) * 1996-08-29 1998-01-15 Mannesmann Ag Verfahren und Vorrichtung zum Einfädeln von Rohren in eine Ziehvorrichtung
DE19856479A1 (de) * 1998-12-02 2000-06-08 Mannesmann Ag Vorrichtung und Arbeitsverfahren zum Einfädeln von Rohren in eine Ziehmaschine
DE10141637A1 (de) * 2001-08-24 2003-03-13 Sms Meer Gmbh Ziehvorrichtung für eine Ziehmaschine, insbesondere für die Herstellung von Stangen und Rohren aus Metall
RU2475317C1 (ru) * 2011-10-05 2013-02-20 Владимир Николаевич Стазаев Линия для производства проволоки в.н. стазаева
JP6046853B1 (ja) * 2016-07-01 2016-12-21 範子 遣水 食材調理用溝切りカッター
DE102018111731A1 (de) * 2017-05-26 2018-11-29 Sms Group Gmbh Raupenzugziehmaschine und Ziehverfahren
CN107971356A (zh) * 2017-12-21 2018-05-01 大连康丰科技有限公司 带有产品尺寸稳定系统的连续挤压生产线
CN108326063A (zh) * 2018-01-31 2018-07-27 华霆（合肥）动力技术有限公司 挤压成型装置及系统

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE514665C (de) * 1930-12-16 Streicher Fa M Schichtregler fuer Schraegrostfeuerungen
BE514665A (xx) *
US1911157A (en) * 1927-12-28 1933-05-23 Union Drawn Steel Company Mechanism for drawing metal
EP0645200B1 (en) * 1993-09-29 1998-01-28 DANIELI & C. OFFICINE MECCANICHE S.p.A. Machine to draw bars
FR2746200B1 (fr) 1996-03-12 1998-05-29 Dispositif d'echange d'informations sans contact avec une etiquette electronique

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7096706B2 (en) 2003-09-10 2006-08-29 Sms Meer Gmbh Drawing apparatus and method of operating same
DE10341726B4 (de) * 2003-09-10 2008-09-04 Sms Meer Gmbh Ziehvorrichtung und Verfahren zum Betreiben einer Ziehvorrichtung

Also Published As

Publication number Publication date
PE22697A1 (es) 1997-07-19
JPH10511046A (ja) 1998-10-27
HUP9800808A2 (hu) 1998-07-28
RU2133649C1 (ru) 1999-07-27
JP3066807B2 (ja) 2000-07-17
US5660071A (en) 1997-08-26
ES2126394T3 (es) 1999-03-16
CA2214020C (fr) 2005-12-06
ZA962329B (en) 1996-09-27
MY116647A (en) 2004-03-31
FR2731925B1 (fr) 1997-05-23
PL179893B1 (pl) 2000-11-30
FR2731925A1 (fr) 1996-09-27
IL117509A0 (en) 1996-07-23
DZ2004A1 (fr) 2002-07-20
AR001272A1 (es) 1997-10-08
IN188011B (xx) 2002-08-10
CO4520113A1 (es) 1997-10-15
YU16796A (sh) 1998-08-14
TW315332B (xx) 1997-09-11
CA2214020A1 (fr) 1996-10-03
TNSN96041A1 (fr) 1998-12-31
UA45395C2 (uk) 2002-04-15
HK1002175A1 (en) 1998-08-07
KR19980702721A (ko) 1998-08-05
IL117509A (en) 1999-08-17
CN1082405C (zh) 2002-04-10
TR199701022T1 (xx) 1998-01-21
AU5150696A (en) 1996-10-16
SK284696B6 (sk) 2005-09-08
CN1179119A (zh) 1998-04-15
DE69601357T2 (de) 1999-05-27
HUP9800808A3 (en) 2000-06-28
DE69601357D1 (de) 1999-02-25
WO1996030136A1 (fr) 1996-10-03
KR100287029B1 (ko) 2001-04-16
BR9607744A (pt) 1998-06-23
EP0814921A1 (fr) 1998-01-07
EG20904A (en) 2000-06-28
HU224599B1 (hu) 2005-11-28
MX9706903A (es) 1997-11-29
YU49216B (sh) 2004-11-25
SI0814921T1 (en) 1999-08-31
SK127697A3 (en) 1998-01-14
AU701404B2 (en) 1999-01-28
PL322308A1 (en) 1998-01-19

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